Using parallel computing for two for loops

In my program(in matlab) I have two for loops and I want to use parallel computing for these loops:

#loop a
for i=1:120000
using var2(from the previous iteration (loop b)) and do something
and make var1
end;
#loop b
for j=1:120000
using var1(from the previous iteration(loop a)) and do something
and make var2
end;

my computer is dual core.can anyone help me?

Answer 1

[Matt J]

Seems like they should be combined into 1 loop

 parfor i=1:120000

   var1_new = (use var2)
   var2_new = (use var1)

   var1=var1_new;
   var2=var2_new;

 end